Tech blog

We had some problems with subdirectories under our root website.

We wanted to add different examples under our website root (organized into folders) like this:

• www.our-website.com/example1
• www.our-website.com/example2
• …

And we always got these errors.

At root of our website www.our-website.com we didn’t have any web.config and we didn’t want any. Every subfolder has its own web.config and it didn’t worked under IIS7

Solution:

Click on each folder under IIS and then right mouse click Convert To Application and it worked.

Just use this piece of code or read at this MSDN article:

private void VaryQualityLevel()
{
	// Get a bitmap.
	Bitmap bmp1 = new Bitmap(@"c:\TestPhoto.jpg");
	ImageCodecInfo jgpEncoder = GetEncoder(ImageFormat.Jpeg);

	// Create an Encoder object based on the GUID
	// for the Quality parameter category.
	System.Drawing.Imaging.Encoder myEncoder =
	System.Drawing.Imaging.Encoder.Quality;

	// Create an EncoderParameters object.
	// An EncoderParameters object has an array of EncoderParameter
	// objects. In this case, there is only one
	// EncoderParameter object in the array.
	EncoderParameters myEncoderParameters = new EncoderParameters(1);

	EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
	myEncoderParameters.Param[0] = myEncoderParameter;
	bmp1.Save(@"c:\TestPhotoQualityFifty.jpg", jgpEncoder, myEncoderParameters);

	myEncoderParameter = new EncoderParameter(myEncoder, 100L);
	myEncoderParameters.Param[0] = myEncoderParameter;
	bmp1.Save(@"c:\TestPhotoQualityHundred.jpg", jgpEncoder, myEncoderParameters);

	// Save the bitmap as a JPG file with zero quality level compression.
	myEncoderParameter = new EncoderParameter(myEncoder, 0L);
	myEncoderParameters.Param[0] = myEncoderParameter;
	bmp1.Save(@"c:\TestPhotoQualityZero.jpg", jgpEncoder, myEncoderParameters);

}

...

private ImageCodecInfo GetEncoder(ImageFormat format)
{
	ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();

	foreach (ImageCodecInfo codec in codecs)
	{
	if (codec.FormatID == format.Guid)
	{
	return codec;
	}
	}
	return null;
}

Problem is that Visual Studio 2008 does not have Windows Service project and you can not add it and create a setup for this project.

To override this use manual approach:

1. Create your service class manually:

using System;
using System.Diagnostics;
using System.ServiceProcess;

namespace WindowsService
{
    class WindowsService : ServiceBase
    {
        ///
        /// Public Constructor for WindowsService.
        /// - Put all of your Initialization code here.
        ///
        public WindowsService()
        {
            this.ServiceName = "My Windows Service";
            this.EventLog.Log = "Application";

            // These Flags set whether or not to handle that specific

            //  type of event. Set to true if you need it, false otherwise.

            this.CanHandlePowerEvent = true;
            this.CanHandleSessionChangeEvent = true;
            this.CanPauseAndContinue = true;
            this.CanShutdown = true;
            this.CanStop = true;
        }

        ///
        /// The Main Thread: This is where your Service is Run.
        ///
        static void Main()
        {
            ServiceBase.Run(new WindowsService());
        }

        ///
        /// Dispose of objects that need it here.
        ///
        ///
Whether
        ///    or not disposing is going on.
        protected override void Dispose(bool disposing)
        {
            base.Dispose(disposing);
        }

        ///
        /// OnStart(): Put startup code here
        ///  - Start threads, get inital data, etc.
        ///
        ///

        protected override void OnStart(string[] args)
        {
            base.OnStart(args);
        }

        ///
        /// OnStop(): Put your stop code here
        /// - Stop threads, set final data, etc.
        ///
        protected override void OnStop()
        {
            base.OnStop();
        }

        ///
        /// OnPause: Put your pause code here
        /// - Pause working threads, etc.
        ///
        protected override void OnPause()
        {
            base.OnPause();
        }

        ///
        /// OnContinue(): Put your continue code here
        /// - Un-pause working threads, etc.
        ///
        protected override void OnContinue()
        {
            base.OnContinue();
        }

        ///
        /// OnShutdown(): Called when the System is shutting down
        /// - Put code here when you need special handling
        ///   of code that deals with a system shutdown, such
        ///   as saving special data before shutdown.
        ///
        protected override void OnShutdown()
        {
            base.OnShutdown();
        }

        ///
        /// OnCustomCommand(): If you need to send a command to your
        ///   service without the need for Remoting or Sockets, use
        ///   this method to do custom methods.
        ///
        ///
Arbitrary Integer between 128 & 256
        protected override void OnCustomCommand(int command)
        {
            //  A custom command can be sent to a service by using this method:
            //#  int command = 128; //Some Arbitrary number between 128 & 256
            //#  ServiceController sc = new ServiceController("NameOfService");
            //#  sc.ExecuteCommand(command);

            base.OnCustomCommand(command);
        }

        ///
        /// OnPowerEvent(): Useful for detecting power status changes,
        ///   such as going into Suspend mode or Low Battery for laptops.
        ///
        ///
The Power Broadcast Status
        /// (BatteryLow, Suspend, etc.)
        protected override bool OnPowerEvent(PowerBroadcastStatus powerStatus)
        {
            return base.OnPowerEvent(powerStatus);
        }

        ///
        /// OnSessionChange(): To handle a change event
        ///   from a Terminal Server session.
        ///   Useful if you need to determine
        ///   when a user logs in remotely or logs off,
        ///   or when someone logs into the console.
        ///
        ///
The Session Change
        /// Event that occured.
        protected override void OnSessionChange(
                  SessionChangeDescription changeDescription)
        {
            base.OnSessionChange(changeDescription);
        }
    }
}

2. Add installer class:

using System;
using System.ComponentModel;
using System.Configuration.Install;
using System.ServiceProcess;

namespace WindowsService
{
    [RunInstaller(true)]
    public class WindowsServiceInstaller : Installer
    {
        ///
        /// Public Constructor for WindowsServiceInstaller.
        /// - Put all of your Initialization code here.
        ///
        public WindowsServiceInstaller()
        {
            ServiceProcessInstaller serviceProcessInstaller =
                               new ServiceProcessInstaller();
            ServiceInstaller serviceInstaller = new ServiceInstaller();

            //# Service Account Information
            serviceProcessInstaller.Account = ServiceAccount.LocalSystem;
            serviceProcessInstaller.Username = null;
            serviceProcessInstaller.Password = null;

            //# Service Information
            serviceInstaller.DisplayName = "My New C# Windows Service";
            serviceInstaller.StartType = ServiceStartMode.Automatic;

            //# This must be identical to the WindowsService.ServiceBase name
            //# set in the constructor of WindowsService.cs
            serviceInstaller.ServiceName = "My Windows Service";

            this.Installers.Add(serviceProcessInstaller);
            this.Installers.Add(serviceInstaller);
        }
    }
}

3. Use Framework 2.0 instalutil.exe to create Installation:

Install.bat

@ECHO OFF

REM The following directory is for .NET 2.0
set DOTNETFX2=%SystemRoot%\Microsoft.NET\Framework\v2.0.50727
set PATH=%PATH%;%DOTNETFX2%

echo Installing WindowsService...
echo ---------------------------------------------------
InstallUtil /i WindowsService.exe
echo ---------------------------------------------------
echo Done.

Uninstall.bat

@ECHO OFF

REM The following directory is for .NET 2.0
set DOTNETFX2=%SystemRoot%\Microsoft.NET\Framework\v2.0.50727
set PATH=%PATH%;%DOTNETFX2%

echo Installing WindowsService...
echo ---------------------------------------------------
InstallUtil /u WindowsService.exe
echo ---------------------------------------------------
echo Done.

In .NET, sizeof() works only for basic variable types, like int, double, etc. If you try to use sizeof() for a managed class then compiler reports error:

Cannot take the address of, get the size of, or declare a pointer to a managed type

Alternative to sizeof() would be System.Runtime.InteropServices.Marshal.SizeOf() but this one works with unmanaged types (not a native .NET class).

So far, a decent solution would be to serialize object into binary stream and get the stream size. Source code:

public static long SizeOf(object obj)
{
long size = 0;

try
{
System.IO.MemoryStream stream = new System.IO.MemoryStream();
BinaryFormatter objFormatter = new BinaryFormatter();
objFormatter.Serialize(stream, obj);
size = stream.Length;
}
catch (Exception ex)
{
}

return size;
}

A non-programatic alternative is to use .NET profiler to retrieve object size.

Reference: http://social.msdn.microsoft.com/forums/en-US/clr/thread/b871dee4-6eb5-4dca-be79-b9589a79f5e9/

1. If you want to host ASP.NET MVC on IIS7 don’t forget to copy also MVC DLLs to bin directory when publishing.
   • If you have ASP.NET 3.5 SP1 installed on server copy only System.Web.Mvc
   • If you don’t have ASP.NET 3.5 SP1 installed on server copy
     System.Web.Mvc
     System.Web.Routing
     System.Web.Abstractions
2. You need to copy also web.config that is under directory where your Views are – it is not included in your project by default so it will not be published. Copy this manually or include this web.config in your project and then Publish.